// TCPDlg.cpp : implementation file
//

#include "stdafx.h"
#include "gensock.h"
#include "TCP.h"
#include "TCPDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:
	CAboutDlg();

// Dialog Data
	//{{AFX_DATA(CAboutDlg)
	enum { IDD = IDD_ABOUTBOX };
	//}}AFX_DATA

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CAboutDlg)
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	//}}AFX_VIRTUAL

// Implementation
protected:
	//{{AFX_MSG(CAboutDlg)
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
	//{{AFX_DATA_INIT(CAboutDlg)
	//}}AFX_DATA_INIT
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CAboutDlg)
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
	//{{AFX_MSG_MAP(CAboutDlg)
		// No message handlers
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CTCPDlg dialog

CTCPDlg::CTCPDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CTCPDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CTCPDlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);

	m_pSocket = new CGenSocket(this);
	m_pClntSock = NULL;
	m_nIDTimer = 1;
	m_bSockErr = FALSE;
}

void CTCPDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CTCPDlg)
	DDX_Control(pDX, IDC_STATIC_STATUS, m_wndStatus);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CTCPDlg, CDialog)
	//{{AFX_MSG_MAP(CTCPDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTTON_OK, OnButtonOk)
	ON_WM_TIMER()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CTCPDlg message handlers

BOOL CTCPDlg::OnInitDialog()
{
	CString strText;

	CDialog::OnInitDialog();

	// Add "About..." menu item to system menu.

	// IDM_ABOUTBOX must be in the system command range.
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);

	CMenu* pSysMenu = GetSystemMenu(FALSE);
	if (pSysMenu != NULL)
	{
		CString strAboutMenu;
		strAboutMenu.LoadString(IDS_ABOUTBOX);
		if (!strAboutMenu.IsEmpty())
		{
			pSysMenu->AppendMenu(MF_SEPARATOR);
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
		}
	}

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	// create listening socket
	if (m_pSocket->Create(79))
	{
		strText = "Finger socket created.";

		if (m_pSocket->Listen())
		{
			strText = "Finger socket created and listening.";
	
			SetTimer(m_nIDTimer, 5000, NULL);
		}
		else
		{
			strText = "Finger socket cannot listen!";
			m_bSockErr = TRUE;
		}
	}
	else
	{
		strText = "Cannot create Finger socket!";
		m_bSockErr = TRUE;
	}

	m_wndStatus.SetWindowText(strText);
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CTCPDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}
}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void CTCPDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CTCPDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CTCPDlg::ProcessPendingRead()
{
	CString strBuf;
	int nBypeRead;

	if (m_pClntSock)
	{
		nBypeRead = m_pClntSock->Receive(strBuf.GetBuffer(1024), 1024);
		strBuf.ReleaseBuffer();
		
		if (nBypeRead != SOCKET_ERROR)
			strBuf.SetAt(nBypeRead, '\0');
	}
	else
		strBuf = "Not connected!";

	m_wndStatus.SetWindowText(strBuf);

	ShowWindow(SW_SHOW);

	if (m_pClntSock)
	{
		m_pClntSock->Close();
		delete m_pClntSock;
		m_pClntSock = NULL;
	}
}

CTCPDlg::~CTCPDlg()
{
	if (m_pSocket)
	{
		m_pSocket->Close();
		delete m_pSocket;
	}
	if (m_pClntSock)
	{
		m_pClntSock->Close();
		delete m_pClntSock;
	}
}

void CTCPDlg::ProcessPendingAccept()
{
	m_pClntSock = new CGenSocket(this);

	if (!m_pSocket->Accept(*m_pClntSock))
		delete m_pClntSock;
}

void CTCPDlg::OnButtonOk() 
{
	CString strText;

	if(m_bSockErr)
		DestroyWindow();

	ShowWindow(SW_HIDE);
}

void CTCPDlg::OnTimer(UINT nIDEvent) 
{
	ShowWindow(SW_HIDE);
	KillTimer(m_nIDTimer);
	CDialog::OnTimer(nIDEvent);
}
